假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧)，并在其下面写出该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1.每处错误及其修改均仅限一词；2.只允许修改10处，多者（从第11处起）不计分。

At my school, we aren't allowed to chew gum during class. But sometimes I chew it during breaks instead. Last week, I forgot to spitting out my gum before coming into the classroom. I knew if I was catching, I'd get in trouble. What a awful move! Unfortunately, my gum started go down my throat, and I choked when try to spit it back up. My teacher, Miss Green, comes over to find out what was the matter with. At that time I spit the gum right in his hair. My classmate burst out laughing.